ExtraMatchers.java

/*
 * SquirrelID, a UUID library for Minecraft
 * Copyright (C) sk89q <http://www.sk89q.com>
 * Copyright (C) SquirrelID team and contributors
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.sk89q.squirrelid.util;

import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeMatcher;

import java.util.Map;

public final class ExtraMatchers {

    private ExtraMatchers() {
    }

    public static <K, V> Matcher<Map<K, V>> hasSize(final int size) {
        return new TypeSafeMatcher<Map<K, V>>() {
            @Override
            public boolean matchesSafely(Map<K, V> kvMap) {
                return kvMap.size() == size;
            }

            @Override
            public void describeTo(Description description) {
                description.appendText(" has ").appendValue(size).appendText(" key/value pairs");
            }
        };
    }

}